Paint.



Warns or carcass, runners, assienoia 'ro 'rna anxcn cannon co. or

' cnrcaso, ILLINOIS, s. coaronnrzon or oonoanno.

PAINT. f

Patented July a, 1915.

Ho Drawing. Application filed April 13, mic-1mm K0. 555,247. Eenewed September 3, 1914. Serial No. i 7 860,099.

[of Illinois, have-invented a new and Improved Paint, of which the following is a full: clear, and exact description. Various types-of fusible bitumens of which gilson'ite is a verycommon and highly prized variety, have been used for some time in the production of 'varnishes. The practice has been to subject the bitumen to the action of heat often in the presence of some fixed oil with which it'would form a fluid mass, subsequently thinning the mixture with fluid thinners such as turpentine or benzin. Another practice followed to some extent, is to convert the bitumens into a .fluid state by dissolving them in a suitable solvent such as benzin, subsequently adding the dissolved mass if, desired to fixed oils or other materials with which the fluid bitu mens are miscible.

Bitumens which are nonfusible and relatively insoluble have been considered as worthless by the varnishmaker, as-the varnishes produced from their use would be Y full of insoluble particles which h'eretoiore has been considered a defect. varnishes are fluid mixtures or compounds of oils, gums, thinners, etc, while paints are mixtirresoi oils or thinners which constitute a vehicle,

- tively insoluble bitmnens with linseed oil has shown "me that the paint so produced possesses properties not possessed by the varpreviouslvreferred to.

Fusible or soluble bitumens mixed with linseedoil undergo 'achange whenexposed to the action of the sun or upon exposure.

Disintegration and elimination of free carbon often takes place. With the spccialtype of bitumen that I use as a paint pigment (not as a constituent of a varnish), this ac-' tion will'nottake place. Tests of paint made.

of them'ixtures of my bitumen and linseed oil have shown that this peculiar type of bitumen actually preserves the lin d oil film" from decav and renders it of great ervice in preventing the admittance ,of moisture or other agencies of decay as well as protecting it from the. disintegrating action of one in which the oily portion (petrolenes) islargely absent. Any such asphaltic bitumen or asfihaltite (see The Asphalt and Bituminous Rock Deposits 0; the United States, by George H. Eldridge, United States Geological Survey,) may be used, which is capable of being pulverized to a fine powder. Of, the substances classified as asphaltites,1 have found certain of what are known in the trade as grallamites to be most desirable. Those employed by the mustbe characterized by being practically insoluble in ordinary paint vehicles. The pig- 'Inent, pulverized to a fine powder, is mixed or ground with linseed oil, varnish or any other suitable paint vehicle. The pigmentis prepared by being pulverized by anysuitable means to afinepowder which willpass through about 200mesh. This powder, the

the sun. The special bitumen I refer to is particles of which are hard and friable is then ground or mixed with a suitable drying oil; such as linseed oil, subsequently adding benzin and japan if desired; the pigment 'may be mixed with any suitable paint vehicle in whichthe pigment is relatively insoluble. In mixing the pig'g'i'nent with linseed oil I prefer to use one pound of pigment to twwpounds of linseed oil.

The object ofiny invention is to provide a paint which under conditions to which it may be exposed is chemically and electrically passive, non-corrosive and resistant to acids, alkalis and atmospheric influences.

Another object is to provide apaint'in which the pigment is held in suspension without settling and which lends m the vehicle a high degree of elasticity, resisting the eli'ects of expansion or contractin and at the sometime rendering the vehicle especially resistant to destructive agencies.

' Still another object of this in'vention isto provide a paint for coating porous surfaces,

fabrics, textiles, leather, paper compositions,

and other-similar materials.

Having thus described my invention, I

claim as new and desire to secure by Letters I In testimoriywhereof I have signed my Patent: 4 ,name to this specification in the presence qf A drying oil paint containing anasphaltic two subscribing Witnesses. bitumen as such, in a finely pulver'ized con- JULIUS H. MATTHES. 5 dition, practically insoluble in the paint v e- ,Witnesses:

hide, and infusible at ordin'ziry temperatures J ULIEN T. BESTOR, for the uses and purposes set forth. ETHEL M. BREITUNG. 

